【正文】 l educated persons must some day learn, how to measure their own understanding, how to know what they know or do not know. Let them get on with this job in the way that seems sensible to them. With our help as school teachers if they ask for it. The idea that there is a body of knowledge to be learnt at school and used for the rest of one’s life is nonsense in a world as plicated and rapidly changing as ours. Anxious parents and teachers say, ―But suppose they fail to learn something essential they will need to get in the world?‖ Don’t worry! If it is essential, they will go out into the world and learn it. does the author think is the best way for children to learn things? copying what other people do. making mistakes and having them corrected. listening to explanations from skilled people. asking a great many questions. does the author think teachers do which they should not do? give children correct answers. point out children’s mistakes to them. allow children to mark their own work. encourage children to mark to copy from one another. 中國最大的資料庫下載 中國最大的資料庫下載 passage suggests that learning to speak and learning to ride a bicycle are___. really important skills. important than other skills. different from learning adult skills. the same as learning other skills. , grades, and marks should be abolished because children’s progress should only be estimated by___. persons. children themselves. . . author fears that children will grow up into adults while being___. independent of others. critical of themselves. to think for themselves. to use basic skills. 第 11 篇答案： ABDBC 第 12篇 (Unit 3 Passage 4) We can begin our discussion of ―population as global issue‖ with what most persons mean when they discuss ―the population problem‖: too many people on earth and a too rapid increase in the number added each year. The facts are not in dispute, It was quite right to employ the analogy that likened demographic growth to ―a long, thin powder fuse that burns steadily and haltingly until it finally reaches the charge and explodes.‖ To understand the current situation, which is characterized by rapid increases in population, it is necessary to understand the history of population trends. Rapid growth is a paratively recent phenomenon. Looking back at the 8,000 years of demographic history, we find that populations have been virtually stable or growing very slightly for most of human history. For most of our ancestors, life was hard, often nasty, and very short. There was high fertility in most places, but this was usually balanced by high mortality. For most of human history, it was seldom the case that one in ten persons would live past forty, while infancy and childhood were especially risky periods. Often, societies were in clear danger of extinction because death rates could exceed their birthrates. Thus, the population problem throughout most of history was how to prevent extinction of the human race. This pattern is important to notice. Not only does it put the current problems of demographic growth into a historical perspective, but it suggests that the cause of rapid incre 中國最大的資料庫下載 中國最大的資料庫下載 ase in population in recent years is not a sudden enthusiasm for more children, but an improvement in the conditions that traditionally have caused high mortality. Demographic history can be divided into two major periods: a time of long, slow growth which extended from about 8,000 approximately AD. 1650. In the first period of some 9600 years, the population increased from some 8 million to 500 million in 1650. Between 1650 and the present, the population has increased from 500 million to more than 4 billion. And it is estimated that by the year 20xx there will be billion people throughout the world. One way to appreciate this dramatic difference in such abstract numbers is to reduce the time frame to something that is more manageable. Between 8000BC and 1650, an average of only 50,000 persons was being added annually to the world’s population each year. At present, this number is added every six hours. The increase is about 80,000,000 persons annually. of the following demographic growth pattern is most suitable for the long thin powder fuse analogy? virtually stable or slightly decreasing period and then a sudden explosion of population. slow growth for a long time and then a period of rapid, dramatic increase. many people on earth and a few rapid increase in the number added each year. long period when death rates exceeds birthrates and then a short period with higher fertility and lower mortality. the first period of demographic history, societies were often in danger of extinction because___. one in ten persons could live past 40. was higher mortality than fertility in most places. was too dangerous to have babies due to the poor conditions. ancestors had little enthusiasm for more children. statement is true about population increase? might be an increase of billion persons from now to the year 20xx. 50,000 babies are born every six hours at present. 8000 BC and the present, the population increase is about 80,000,000 persons each year. population increased faster between 8000BC and 1650 than between 1650 and the present. author of the passage intends to___. people against the population explosion in the near future. the demographic growth pattern in the past with that after 1650. out the cause for rapid increase in population in recent years. us a clear and plete picture of the demographic growth. 中國最大的資料庫下載 中國最大的資料庫下載 word ―demographic‖ in the first paragraph means___. of human. study. of human. of human. 第 12篇答案： ABADA 第 13篇 (Unit4 Passage1) Mos